Blaskan header size

Hi there
I am using Blaskan theme for two different websites and although both are Version 2.6.3 they are asking me for different header sizes – one says 1120×160 and the other 540×160 pixels. I don’t understand why they’re different – is that deliberate? I was hoping for 1120×160 on both…
Any suggestions how to make them both the same?
Thank you kindly for your time and help
Maja

My query is still the same – someone please help:
“I am using Blaskan theme for two different websites and although both are Version 2.6.3 they are asking me for different header sizes – one says 1120×160 and the other 540×160 pixels. I don’t understand why they’re different – is that deliberate? I was hoping for 1120×160 on both…
Any suggestions how to make them both the same?”
Thank you